util+tests: fix copyright notices in files copied from NFD

Change-Id: I43fd6a6085cd5ffe99676e20d1cf55400577bdb7
diff --git a/src/util/ethernet.hpp b/src/util/ethernet.hpp
index ef227d4..30a2b8d 100644
--- a/src/util/ethernet.hpp
+++ b/src/util/ethernet.hpp
@@ -1,12 +1,12 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /**
- * Copyright (c) 2014,  Regents of the University of California,
- *                      Arizona Board of Regents,
- *                      Colorado State University,
- *                      University Pierre & Marie Curie, Sorbonne University,
- *                      Washington University in St. Louis,
- *                      Beijing Institute of Technology,
- *                      The University of Memphis
+ * Copyright (c) 2014 Regents of the University of California,
+ *                    Arizona Board of Regents,
+ *                    Colorado State University,
+ *                    University Pierre & Marie Curie, Sorbonne University,
+ *                    Washington University in St. Louis,
+ *                    Beijing Institute of Technology,
+ *                    The University of Memphis.
  *
  * This file is part of ndn-cxx library (NDN C++ library with eXperimental eXtensions).
  *
@@ -112,7 +112,6 @@
 } // namespace util
 } // namespace ndn
 
-
 namespace std {
 
 // specialize std::hash<> for ethernet::Address